Thanks to PsychicNature for suggesting this!

When they make the sinnoh remake, they are sure to make a Mega Torterra. Here would be mine:
Mega Torterra would get the ability multiscale, allowing it to survive powerful hits. (Multiscale weakens attacks done to that pokemon if it is at full health) Torterra has many hp restoring moves like synthesis, ingrain, gigs drain and leech seed, so it can enjoy the effects of multiscale again and again because it keeps healing to full health. Most of its stats grow, but its speed drops due to its now more cumbersome body. It remains a grass and ground type. The picture above looks kind of like what I think it would look like, except maybe the head and legs wouldn't look like that. This Mega would be extremely hard to take out: when it comes in it would be there to stay. :3
Stat boosts:
-30 speed
50 defense
40 sp defense
30 attack
10 sp attack